Saw-jointer



come. j

GERGE WALSH, 0F ,BRoeKwAYvILLn PENNSYLVANIA.

i l sAw-JeogiN'i'ER.

SPECIFICATION raming part of Letters meenam. 244,958, dated July2e,`iee1.

To all whom t may'concern;` p

Be it known that I; G {EQRGE` WALSH, a citizen of the United States;residing at Brockwayville, in the county of Jefferson and State ofPennsylvania, have invented certain new and useful Improvements inSaw-Jointer, or jointer for the leam-teeth and jointer for thechisel-teeth of cross-cnt saws, combined in one instrument; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention,rsuch as will enableothers skilled in the art to whichit appertains to make and use the same, referencelbeing had to theaccompanying drawings, and to the letters or iigures of reference markedthereon, which form a part of this specification.

The object of my invention is -to joint the teeth of saws, by whichmill-men understand filing 01T the points of the teeth to a uniformlength.

VIt consists in, iirst, a contrivance for holding a file squarely overthel points of theeamteeth, so that they may be jointed and evened upalike; and, second, a contrivance for jointin g the chisel, hooker, or'clearin g teeth of cross-cut saws to a uniform length and as muchshorter than the Beam-teeth as may be desired. l attain these objects bythe mechanism illustrated in the accompanying drawings, in which-Figures 1 and 2 are representations of the instrument for jointing theBeam-teeth. At Fig.2isseen theinstrumentDK,placedagainst the-saw C, withthe fiat le A upon the points of the eam-teeth, as it is used. Figs. 3and 4 are representations of the instrument for jointin g thechisel-teeth of cross-cut saws; At

D K, Fig. 4, is seen a side view of the instru'- ment, with the slide II holding the ile E. The saw C, Fig. 2, should be in the same positionin Fig. 4. Fig. 3 represents the under or bottom view of the instrument,with the slide I I and file E in position.

I make the wooden stem D, Figs. 1, 2, 3, and 4, about one and one-fourthinch square and five inches long, and join thereto across the top thebar K of same size, thus forming a T- frame. 'Across the-top of theframe D K, at right angles thereto, I make a frame about five inchessquare, of strips of wood, L L and M M, about one and one-fourth inch inwidth'and one-half inch in thickness. A space is left be- Appneation meaMay 9,1se1`. (Model.)

.tween the strips M M and bar K, in order` `to insert an eight-inchlatle, A, against a'ndparallel with the bar K. I cut away or bevel thetop edge of the bar K, so as to let the file 5 5 A pass over the teethofthe saw C, when the side of the instrument D K is placed against it.The le A is fastened in place firmly by means of gripe and thumb-screw BB. The operator places the saw C in a vise with teeth upward, 6o placesthe stem D against the flat side of the saw, with the iile resting onthe points ofthe teeth. He should hold the stem D rmly against the sideof the saw. He then passes the instrument along the points of the teeth,and thus files them or joints them oft' uniformly and squarely with theside `of the saw.

The present way of jointin g the teeth of saws .is by filing, sometimesby hand, when it is guess-work, and of a more or less uneven and 7oirregular-character, and sometimes by fastening a file in a notch in astraight-edge or strip of board by a wooden key, which does not hold thele true or square, gets out of order, and does not make good work; whilein my invention the'le is held rmly at right angles to the saw, and isnot liable to get out of place, but makes good, true work. For thejointer for the chisel-teeth of crosscut saws I use the same instrument,D K L M, 8o as described above. The tile A should be removed, as notused in this process. I place copperv plates J J, about one-sixteenthinch thick, between the strips M M and L L. I rab- Vbet the inner edgesofthe plates LL, (seen in Fig. 1,) and construct the slide I I abouttwelve inches long by two inches wide and one-half inch thick, its siderabbeted to correspond, so that it willfit and move easily in the spacebetween the plates L L. I fasten an eight or 9o ten inch Iile on theslide I I by means of the griper and screw F and loop and screw G. Icontrive the screws H H so that by their'means and the gripers F G thefile can be thrown oft' from or brought near to the slide I I. rIheoperator places the saw, teeth upward, in a vise, placing'a stift' boardin the vise with it, on the side opposite the operator, nearly as highas the teeth, to keep the saw firm. He then placesthe stem D against theflat side of the Ioosaw, the copper plates J J resting on the points ofthe ileam-teeth, so as to bring the chiseltooth under the centerpf thespace between the rabheted stripsL'L `in oth erwdsjplaces the slideI-I-w-ith the tile E E in place (le down) between the strips L L, sothat the chis- 5 el-teeth will he directly under the iile. Iu thisposition heholds the instru nientrnily against the saw with the lefthand and pushes the file squarely back and forth across the points ofthe chisel-teeth, thus jointin g or lin g them oil' as much shorter thanthe Henin-teeth as desired. He sets the tile 0n the slide down until itwill cut the hooker-teeth as much shorter as he wishes, and then by thisprocess each chisel or hooker tooth will be jointed to a uniform 15length.

I claim as my improvementl. The coutrivance of the T-shaped frame D K,together with the frame onthe top of it, constructed of the pieces L LandM Mfor holding a. il-iplceo'ver the teeth 'ati-right angles to zo theside' of the saw, inthe manner described. 2. rlhe coutriva-nce of theT-shaped frame D K jointly' with the frame L L M M on the top of it, andwith the slide I I holding the tile, as and for the purpose set forth. 23. The eontrivance of the rabetted slide I I jointly with the gripingdevices F G for holding the file and guiding it across the frame.

In testimony whereof I aix my signature in presence of two Witnesses.

11i. GEORGE WALSH.

mark. Witnesses:

R. C. MooRHEAD, J. G. DAILEY.

